138387610431

Names of 138387610431

• Cardinal: 138387610431 can be written as One hundred thirty-eight billion, three hundred eighty-seven million, six hundred ten thousand, four hundred thirty-one.

Scientific notation

• Scientific notation: 1.38387610431 × 10¹¹

Factors of 138387610431

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 7859

Divisors of 138387610431

• Number of divisors d(n): 64
• Complete list of divisors:
  1 3 7 9 21 27 63 189 283 359 849 1077 1981 2513 2547 3231 5943 7207 7539 7641 9693 17829 21621 22617 50449 53487 64863 67851 101597 151347 194589 304791 454041 711179 914373 1362123 2039581 2133537 2587313 2743119 6118743 6400611 7761939 14277067 18111191 18356229 19201833 23285817 42831201 54333573 55068687 69857451 128493603 163000719 385480809 489002157 732209579 2196628737 5125467053 6589886211 15376401159 19769658633 46129203477 138387610431
• Sum of all divisors σ(n): 235822694400
• Sum of proper divisors (its aliquot sum) s(n): 97435083969
• 138387610431 is a deficient number, because the sum of its proper divisors (97435083969) is less than itself. Its deficiency is 40952526462

Bases of 138387610431

• Binary: 10000000111000100010110101101100111111₂
• Hexadecimal: 0x20388B5B3F
• Base-36: 1RKOERLR

Squares and roots of 138387610431

• 138387610431 squared (138387610431²) is 19151130720802220005761
• 138387610431 cubed (138387610431³) is 2650279217503533849957207843692991
• The square root of 138387610431 is 372004.8526981873
• The cube root of 138387610431 is 5172.4829777727

Scales and comparisons

• 138,387,610,431 seconds is equal to 4,400 years, 15 weeks, 3 days, 10 hours, 53 minutes, 51 seconds.
• To count from 1 to 138,387,610,431 would take you about eight thousand, eight hundred years!

  This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)

• A cube with a volume of 138387610431 cubic inches would be around 431 feet tall.

Recreational maths with 138387610431

• 138387610431 backwards is 134016783831
• The number of decimal digits it has is: 12
• The sum of 138387610431's digits is 45
• More coming soon!